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btrfs-progs: readahead errors are not fatal

Message ID 1409161665-28234-1-git-send-email-dsterba@suse.cz (mailing list archive)
State Not Applicable
Headers show

Commit Message

David Sterba Aug. 27, 2014, 5:47 p.m. UTC 
Kill the BUG_ON.

Signed-off-by: David Sterba <dsterba@suse.cz>
---
 disk-io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/disk-io.c b/disk-io.c
index 8db0335bc81b..7ddd4b90836f 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -152,7 +152,8 @@  int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
 	length = blocksize;
 	ret = btrfs_map_block(&root->fs_info->mapping_tree, READ,
 			      bytenr, &length, &multi, 0, NULL);
-	BUG_ON(ret);
+	if (ret)
+		return 0
 	device = multi->stripes[0].dev;
 	device->total_ios++;
 	blocksize = min(blocksize, (u32)(64 * 1024));